Ruiqing Fan, D. Zhu, Y. Mu
Dec 1, 2004
Citations
1
Influential Citations
58
Citations
Journal
European Journal of Inorganic Chemistry
Abstract
Four new CdII complexes of 2,6-bis[1-(phenylimino)ethyl]pyridine (L1), 2,6-bis[1-(2,6-diisopropylphenylimino)ethyl]pyridine (L2), 2,6-bis[1-(2,6-dimethylphenylimino)ethyl]pyridine (L3), 2,6-bis[1-(2-methylphenylimino)ethyl]pyridine (L4) have been synthesized. These complexes have the formulas [Cd(L1)Cl2]·1.5CH3CN (1), [Cd(L2)Cl2] (2), [Cd(L3)Cl2]·CH3CN (3), and [Cd(L4)Cl2]·CH3CN (4). The molecular structures of complexes 1−4 were determined by single-crystal X-ray diffraction. Crystallographic studies of 1−4 reveal all four complexes to be five-coordinate with geometries that can be best described as distorted trigonal-bipyramidal. All eight compounds (L1−L4 and 1−4) are luminescent at room temperature in solution and the solid state. At 298 K in dichloromethane solution, all compounds have fluorescent emissions at about 368−409 nm. The fluorescent emission of these compounds originates from ligand-centered π*−π transitions. The CdII centers play a key role in enhancing the fluorescent emission of the ligands. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)